Dry ice, commonly used for cooling and creating fog effects, is the solid form of which substance?
AWater
BCarbon dioxide
CNitrogen
DAmmonia
Explanation
Dry ice is simply the solid form of carbon dioxide, formed by cooling and compressing the gas until it solidifies at extremely low temperatures, around -78.5 degrees Celsius. Unlike ordinary ice, dry ice does not melt into a liquid under normal atmospheric conditions but instead sublimates directly into carbon dioxide gas, which is why it’s called dry ice and produces a distinctive fog effect as it interacts with surrounding moisture in the air. Because of its extremely low temperature, dry ice must be handled carefully, typically with gloves, to avoid skin burns from direct contact. Explore more Everyday Science MCQs on mcqstutor to keep practicing.

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